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| 001 | 863827 | ||
| 005 | 20220930130215.0 | ||
| 024 | 7 | _ | |a 10.1016/j.chemphyslip.2019.104788 |2 doi |
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| 100 | 1 | _ | |a Jaksch, Sebastian |0 P:(DE-Juel1)157910 |b 0 |e Corresponding author |u fzj |
| 245 | _ | _ | |a Long-Range Excitations in Phospholipid Membranes |
| 260 | _ | _ | |a Amsterdam [u.a.] |c 2019 |b Elsevier Science |
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| 520 | _ | _ | |a We investigated the existence of long-range excitations and correlated structures in phospholipid membranes by means of grazing-incidence neutron spin echo spectroscopy, grazing-incidence small-angle neutron scattering, and corresponding theoretical calculations inspired by smectic-membrane theory. All these methods confirmed the existence of thermal excitations in the plane of the surface of the phospholipid membranes or the corresponding structures, respectively. Also, these measurements revealed a temperature dependence of these excitations. These excitations are associated with 100 nm in-plane correlations around physiological temperatures and of 75 nm at 16∘C. A single excitation has an energy around the μeV-regime. A temperature series revealed a high abundance at physiological temperatures and pronounced long-range in-plane structures, which are strongly suppressed at temperatures below 20∘C. From the length-scales and energy transfers involved we surmise that these excitations may play a role in several functions of the cell membranes such as stability and energy dissipation along the membrane. From a fundamental point of view, the observed behavior of those excitations is congruent with that of a quasi-particle (surface mode phonon, smomon) that exists in the plane of phospholipid membranes. |
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| 773 | _ | _ | |a 10.1016/j.chemphyslip.2019.104788 |g p. S0009308419300799 |0 PERI:(DE-600)1496839-3 |p 104788 |t Chemistry and physics of lipids |v 225 |y 2019 |x 0009-3084 |
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